Originally Posted by
Farmer Geddon
My cmh measured 320w but it's a cheapo meter. The 8" rvk running at 40% + filter measured 80w.
Where led also wins on specs imo is the angle of lighting. Something like 110 degrees iirc. With hid, not much of the light goes direct from bulb to leaf. The rest hits the reflector and/or the walls first. With led, not much light seems to hit the wall.
A 45% saving in running costs would be nice. Especially if growing autos at 24/0. Call it 333w draw, that's 56 kw/hr per week. £10.64 with my supplier, including 5% vat. A 45% saving is £4.79 a week. Over 2 years that's a tad under £500.
Will £500 get a high end led?
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